Trust X Series, Руководство пользователя

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Piping orientation during brazing
Brazing should be conducted downwards or horizontally to avoid filler leakage.
Figure 3
‐
5.6: Piping orientation during brazing
A D
Brazing
Brazing
Brazing
Piping overlap during brazing
Table 3
‐
5.3 specifies the minimum permissible piping overlap and the range of permissible gap sizes for brazed joints
on piping of different diameters. Refer also to Figure 3
‐
5.7.
Figure 3
‐
5.7: Piping overlap and gap for brazed joints
A D
B
Brazing
Legend
A Inner diameter of larger pipe
D Outer diameter of smaller pipe
B Inlaid depth (overlap)
Table 3
‐
5.3: Piping overlap and gap for brazed joints 1
D (mm)
Minimum
permissible B
(mm)
Permissible A – D
(mm)
5 < D < 8 6
0.05
‐
0.21
8 < D < 12 7
12 < D < 16 8
0.05
‐
0.27
16 < D < 25 10
25 < D < 35 12
0.05
‐
0.35
35 < D < 45 14
Notes:
1. A, B, D refer to the dimensions shown in Figure 3
‐
5.7.
Filler

Use a copper/phosphorus brazing alloy (BCuP) filler that does not require flux.

Do not use flux. Flux can cause corrosion of piping and can affect the performance of compressor oil.

Do not use anti
‐
oxidants when brazing. Residue can clog piping and damage components.